High drug load tablet

A small tablet comprising a pharmacologically effective amount of 4-(4-methylpiperazin-1-ylmethyl)-N-[4-methyl-3-(4-pyridin-3-yl)pyrimidin-2-ylamino)phenyl]-benzamide of formula (1) in the form of a monomesylate salt as the sole active drug:

• in an amount from 30% to 80% by weight of the active moiety based on the total weight of the small tablet;
• and at least one disintegrant, wherein the at least one disintegrant is cross-linked polyvinlypyrrolidinone, wherein the small tablet is either
• a small ovaloid tablet that is 10 to 20 mm in length, 5 to 10 mm in width and 4 to 8 mm in thickness or
• a small round tablet that is 5 to 15 mm in diameter and 2 to 5 mm in thickness
• and wherein the pharmacologically effective amount of the sole active moiety 4-(4-methylpiperazin-1-ylmethyl)-N-[4-methyl-3-(4-pyridin-3-yl)pyrimidin-2-ylamino)phenyl]-benzamide is from 50 mg to 600 mg.